Mozilla

Mozilla's New CEO Bets Firefox's Future on AI 114

Mozilla has named Anthony Enzor-DeMeo as its new chief executive, promoting the executive who has spent the past year leading the Firefox browser team and who now plans to make AI central to the company's future.

Enzor-DeMeo announced on Tuesday that an "AI Mode" is coming to Firefox next year. The feature will let users choose from multiple AI models rather than being locked into a single provider. Some options will be open-source models, others will be private "Mozilla-hosted cloud options," and the company also plans to integrate models from major AI companies. Mozilla itself will not train its own large language model.

"We're not incentivized to push one model or the other," Enzor-DeMeo told The Verge. Firefox currently has about 200 million monthly users, a fraction of Chrome's roughly 4 billion, though Enzor-DeMeo insists mobile usage is growing at a decent clip.

He takes over from interim CEO Laura Chambers, who led the company through a major antitrust case and what Mozilla describes as "double-digit mobile growth" in Firefox. Chambers is returning to the Mozilla board of directors. The new CEO has outlined three priorities: ensuring all products give users control over AI features including the ability to turn them off, building a business model around transparent monetization, and expanding Firefox into a broader ecosystem of trusted software. Mozilla VPN integration is planned for the browser next year.
AI

Bill Gates' Daughter Secures $30 Million For AI App Built In Stanford Dorm 40

Phoebe Gates, Bill Gates' youngest daughter, has raised $30 million for the AI shopping app she built in her Stanford dorm room with classmate Sophia Kianni. The app is called Phia and is pitched as a way to simplify price comparison and secondhand shopping. "Its AI-powered search engine -- available as an app and as a browser extension for Chrome and Safari -- pulls listings from more than 40,000 retail and resale sites so users can compare prices, surface real-time deals, and determine whether an item's cost is typical, high or fair," reports the San Francisco Chronicle. The app has reached 750,000 downloads in eight months and is valued at $180 million. From the report: Gates told Elle that when she first floated the idea to her parents, they urged her to keep it as a side project -- advice she followed by enrolling in Stanford's night program after moving to New York and finishing her degree in 2024. "They were like, 'Okay, you can do this as a side thing, but you need to stay in school.' I don't think people would expect that from my family, to be honest," she said.

Her father dropped out of Harvard University in 1975 to launch Microsoft. Kianni even paused her degree temporarily "to learn, as quickly as possible, as much as we could about the industry that we would be operating in," she told Vogue. Bill Gates has not invested in the company, though he has publicly supported its mission.
Google

Google is Building an Experimental New Browser and a New Kind of Web App (theverge.com) 18

Google's Chrome team has built an experimental browser called Disco that takes a query or prompt, opens a cluster of related tabs, and then generates a custom application tailored to whatever task the user is trying to accomplish. The browser launched Thursday as an experiment in Google's Search Labs.

GenTabs, the core feature powering Disco, are information-rich pages created by Google's Gemini AI models -- ask for travel tips and the system builds a planner app; ask for study help and it creates a flashcard system. Disco -- named partly for fun and partly as shorthand for "discovery" -- started as a hackathon project inside Google before catching the team's imagination.

Parisa Tabriz, who leads the Chrome team, said that Disco is not intended as a general-purpose browser and is not an attempt to cannibalize Chrome. The experiment aims to test what happens when users move from simply having tabs to generating personalized, curated applications on demand. The capability relies on features in the recently launched Gemini 3, which can create one-off interactive interfaces and build miniature apps on the fly rather than just returning text or images.
Security

AI Hackers Are Coming Dangerously Close to Beating Humans (msn.com) 30

Stanford researchers spent much of the past year building an AI bot called Artemis that scans networks for software vulnerabilities, and when they pitted it against ten professional penetration testers on the university's own engineering network, the bot outperformed nine of them. The experiment offers a window into how rapidly AI hacking tools have improved after years of underwhelming performance.

"We thought it would probably be below average," said Justin Lin, a Stanford cybersecurity researcher. Artemis found bugs at a fraction of human cost -- just under $60 per hour compared to the $2,000 to $2,500 per day that professional pen testers typically charge. But its performance wasn't flawless. About 18% of its bug reports were false positives, and it completely missed an obvious vulnerability on a webpage that most human testers caught. In one case, Artemis found a bug on an outdated page that didn't render in standard browsers; it used a command-line tool called Curl instead of Chrome or Firefox.

Dan Boneh, a Stanford computer science professor who advised the researchers, noted that vast amounts of software shipped without being vetted by LLMs could now be at risk. "We're in this moment of time where many actors can increase their productivity to find bugs at an extreme scale," said Jacob Klein, head of threat intelligence at Anthropic.
AI

Browser Extension 'Slop Evader' Lets You Surf the Web Like It's 2022 (404media.co) 47

"The internet is being increasingly polluted by AI generated text, images and video," argues the site for a new browser extension called Slop Evader. It promises to use Google's search API "to only return content published before Nov 30th, 2022" — the day ChatGPT launched — "so you can be sure that it was written or produced by the human hand."

404 Media calls it "a scorched earth approach that virtually guarantees your searches will be slop-free." Slop Evader was created by artist and researcher Tega Brain, who says she was motivated by the growing dismay over the tech industry's unrelenting, aggressive rollout of so-called "generative AI" — despite widespread criticism and the wider public's distaste for it. "This sowing of mistrust in our relationship with media is a huge thing, a huge effect of this synthetic media moment we're in," Brain told 404 Media, describing how tools like Sora 2 have short-circuited our ability to determine reality within a sea of artificial online junk. "I've been thinking about ways to refuse it, and the simplest, dumbest way to do that is to only search before 2022...."

Currently, Slop Evader can be used to search pre-GPT archives of seven different sites where slop has become commonplace, including YouTube, Reddit, Stack Exchange, and the parenting site MumsNet. The obvious downside to this, from a user perspective, is that you won't be able to find anything time-sensitive or current — including this very website, which did not exist in 2022. The experience is simultaneously refreshing and harrowing, allowing you to browse freely without having to constantly question reality, but always knowing that this freedom will be forever locked in time — nostalgia for a human-centric world wide web that no longer exists.

Of course, the tool's limitations are part of its provocation. Brain says she has plans to add support for more sites, and release a new version that uses DuckDuckGo's search indexing instead of Google's. But the real goal, she says, is prompting people to question how they can collectively refuse the dystopian, inhuman version of the internet that Silicon Valley's AI-pushers have forced on us... With enough cultural pushback, Brain suggests, we could start to see alternative search engines like DuckDuckGo adding options to filter out search results suspected of having synthetic content (DuckDuckGo added the ability to filter out AI images in search earlier this year)... But no matter what form AI slop-refusal takes, it will need to be a group effort.

Operating Systems

Are There More Linux Users Than We Think? (zdnet.com) 88

"By my count, Linux has over 11% of the desktop market," writes ZDNet's Steven Vaughan-Nichols: In StatCounter's latest US numbers, which cover through October, Linux shows up as only 3.49%. But if you look closer, "unknown" accounts for 4.21%. Allow me to make an educated guess here: I suspect those unknown desktops are actually running Linux. What else could it be? FreeBSD? Unix? OS/2? Unlikely. In addition, ChromeOS comes in at 3.67%, which strikes me as much too low. Leaving that aside, ChromeOS is a Linux variant. It just uses the Chrome web browser for its interface rather than KDE Plasma, Cinnamon, or another Linux desktop environment. Put all these together, and you get a Linux desktop market share of 11.37%...

If you want to look at the broader world of end-user operating systems, including phones and tablets, Linux comes out even better. In the US, where we love our Apple iPhones, Android — yes, another Linux distro — boasts 41.71% of the market share, according to StatCounter's latest numbers. Globally, however, Android rules with 72.55% of the market. Yes, that's right, if you widen the Linux end-user operating system metric to include PC, tablets, and smartphones, you can make a reasonable argument that Linux, and not Windows, is already the top dog operating system...

If you add Chrome OS (1.7%) and Android (15.8%), 23.3% of all people accessing the U.S. government's websites are Linux users. The Linux kernel's user-facing footprint is much larger than the "desktop Linux" label suggests.

The article lists reasons more people might be switching to Linux, including broader hardware support and "the increased viability of gaming via Steam and Proton" — but also the rise of Digital Sovereignty initiatives. (One EU group has even created EU OS.")

And finally, "not everyone is thrilled with Windows 11 being turned into an AI-agentic operating system."
Chrome

Google Revisits JPEG XL in Chromium After Earlier Removal (windowsreport.com) 25

"Three years ago, Google removed JPEG XL support from Chrome, stating there wasn't enough interest at the time," writes the blog Windows Report. "That position has now changed." In a recent note to developers, a Chrome team representative confirmed that work has restarted to bring JPEG XL to Chromium and said Google "would ship it in Chrome" once long-term maintenance and the usual launch requirements are met.

The team explained that other platforms moved ahead. Safari supports JPEG XL, and Windows 11 users can add native support through an image extension from Microsoft Store. The format is also confirmed for use in PDF documents. There has been continuous demand from developers and users who ask for its return.

Before Google ships the feature in Chrome, the company wants the integration to be secure and supported over time. A developer has submitted new code that reintroduces JPEG XL to Chromium. This version is marked as feature complete. The developer said it also "includes animation support," which earlier implementations did not offer.

Microsoft

'Talking To Windows' Copilot AI Makes a Computer Feel Incompetent' (theverge.com) 56

Microsoft's Copilot AI assistant in Windows 11 fails to replicate the capabilities shown in the company's TV advertisements. The Verge tested Copilot Vision over a week using the same prompts featured in ads airing during NFL games. When asked to identify a HyperX QuadCast 2S microphone visible in a YouTube video -- a task successfully completed in Microsoft's ad -- Copilot gave multiple incorrect answers. The assistant identified the microphone as a first-generation HyperX QuadCast, then as a Shure SM7b on two other occasions. Copilot couldn't identify the Saturn V rocket from a PowerPoint presentation despite the words "Saturn V" appearing on screen. When asked about a cave image from Microsoft's ad, Copilot gave inconsistent responses.

About a third of the time it provided directions to find the photo in File Explorer. On two occasions it explained how to launch Google Chrome. Four times it offered advice about booking flights to Belize. The cave is Rio Secreto in Playa del Carmen, Mexico. Microsoft spokesperson Blake Manfre said "Copilot Actions on Windows, which can take actions on local files, is not yet available." He described it as "an opt-in experimental feature that will be coming soon to Windows Insiders in Copilot Labs, starting with a narrow set of use cases while we optimize model performance and learn." Copilot cannot toggle basic Windows settings like dark mode. When asked to analyze a benchmark table in Google Sheets, it "constantly misread clear-as-day scores both in the spreadsheet and in the on-page review."
Android

Rust in Android: More Memory Safety, Fewer Revisions, Fewer Rollbacks, Shorter Reviews (googleblog.com) 37

Android's security team published a blog post this week about their experience using Rust. Its title? "Move fast and fix things." Last year, we wrote about why a memory safety strategy that focuses on vulnerability prevention in new code quickly yields durable and compounding gains. This year we look at how this approach isn't just fixing things, but helping us move faster.

The 2025 data continues to validate the approach, with memory safety vulnerabilities falling below 20% of total vulnerabilities for the first time. We adopted Rust for its security and are seeing a 1000x reduction in memory safety vulnerability density compared to Android's C and C++ code. But the biggest surprise was Rust's impact on software delivery. With Rust changes having a 4x lower rollback rate and spending 25% less time in code review, the safer path is now also the faster one... Data shows that Rust code requires fewer revisions. This trend has been consistent since 2023. Rust changes of a similar size need about 20% fewer revisions than their C++ counterparts... In a self-reported survey from 2022, Google software engineers reported that Rust is both easier to review and more likely to be correct. The hard data on rollback rates and review times validates those impressions.

Historically, security improvements often came at a cost. More security meant more process, slower performance, or delayed features, forcing trade-offs between security and other product goals. The shift to Rust is different: we are significantly improving security and key development efficiency and product stability metrics.

With Rust support now mature for building Android system services and libraries, we are focused on bringing its security and productivity advantages elsewhere. Android's 6.12 Linux kernel is our first kernel with Rust support enabled and our first production Rust driver. More exciting projects are underway, such as our ongoing collaboration with Arm and Collabora on a Rust-based kernel-mode GPU driver. [They've also been deploying Rust in firmware for years, and Rust "is ensuring memory safety from the ground up in several security-critical Google applications," including Chromium's parsers for PNG, JSON, and web fonts.]

2025 was the first year more lines of Rust code were added to Android than lines of C++ code...
Microsoft

Microsoft Is Offering Rewards Points for Using Edge Instead of Google Chrome (pcmag.com) 57

An anonymous reader shares a report: Microsoft employs various schemes to stop Edge users from switching to Chrome, and the latest includes financial rewards for sticking with the browser. As spotted by Windows Latest, select users who search on Bing within Microsoft Edge for a link to download Google Chrome are now shown an offer to stay with the browser. It gives users 1,300 Microsoft Rewards points, which can be redeemed for gift cards (examples include Amazon, Roblox, and Spotify) or donated to one of over 2 million nonprofits.
Google

Google Relaunches Cameyo To Entice Businesses From Windows To ChromeOS (theverge.com) 27

After acquiring software virtualization company Cameyo last year, Google has relaunched a version of the service that makes it easier for Windows-based organizations to migrate over to ChromeOS. From a report: Now called "Cameyo by Google," the Virtual App Delivery (VAD) solution allows users to run legacy Windows apps in the Chrome browser or as web apps, preventing organizations from being tied to Microsoft's operating system. Google says the new Cameyo experience is more efficient than switching between separate virtual desktop environments, allowing users to stream the specific apps they need instead of virtualizing the entire desktop. That allows Windows-based programs like Excel and AutoCAD to run side-by-side with Chrome and other web apps, giving businesses the flexibility to use a mix of Microsoft and Google services.
Open Source

FFmpeg To Google: Fund Us or Stop Sending Bugs (thenewstack.io) 113

FFmpeg, the open source multimedia framework that powers video processing in Google Chrome, Firefox, YouTube and other major platforms, has called on Google to either fund the project or stop burdening its volunteer maintainers with security vulnerabilities found by the company's AI tools. The maintainers patched a bug that Google's AI agent discovered in code for decoding a 1995 video game but described the finding as "CVE slop."

The confrontation centered on a Google Project Zero policy announced in July that publicly discloses reported vulnerabilities within a week and starts a ninety-day countdown to full disclosure regardless of patch availability. FFmpeg, written primarily in assembly language, handles format conversion and streaming for VLC, Kodi and Plex but operates without adequate funding from the corporations that depend on it. Nick Wellnhofer resigned as maintainer of libxml2, a library used in all major web browsers, because of the unsustainable workload of addressing security reports without compensation and said he would stop maintaining the project in December.
Media

PDF Will Support JPEG XL Format As 'Preferred Solution' (theregister.com) 18

The PDF Association is adding JPEG XL (JXL) support to the PDF specification, giving the advanced image format a new path to relevance despite Google's decision to declare it obsolete and remove it from Chromium. The Register reports: Peter Wyatt, CTO of the PDF Association, said: "We need to adopt a new image [format] that can support HDR [High Dynamic Range] content ... we have picked JPEG XL as our preferred solution." Wyatt also praised other benefits of JXL including wide gamut images, ultra-high resolution support for images with more than 1 billion pixels, and up to 4099 channels with up to 32 bits per channel.

The association is responsible for developing PDF specifications and standards and manages the ISO committee for PDF. JPEG XL is an advanced image format that was designed to be both more efficient and richer in features than JPEG. It was based on a combination of the Free Lossless Image Format (FLIF) from Cloudinary and a Google project called PIK, first released in late 2020, and fully standardized in October 2021 as ISO/IEC 18181. There is a reference implementation called libjxl. A second edition of the ISO standard was published in 2024.

JXL appeared to have wide industry support, including experimental implementation in Chrome and Chromium, until it was killed by Google in October 2022 and removed from its web browser engine. The company stated that "there is not enough interest from the entire ecosystem to continue experimenting with JPEG XL." Many in the community disagreed with the decision, including FLIF inventor Jon Sneyers, who perceived it as the outcome of an internal battle between proponents of JXL and a rival format, AVIF. "AVIF proponents within Chrome are essentially being prosecutor, judge and executioner at the same time," he said.

The Internet

Tim Berners-Lee Says AI Will Not Destroy the Web (theverge.com) 54

Tim Berners-Lee thinks AI will help the web, not destroy it. The inventor of the World Wide Web has spent years warning about platform concentration and social media's corrosive effects, but he views AI differently. AI has accomplished what his Semantic Web project could not. The technology extracts structured data from websites regardless of how the information was formatted. Berners-Lee spent decades trying to convince database owners to make their systems machine-readable voluntarily. AI companies simply took the data anyway. They achieved the machine-readable internet through extraction rather than cooperation, but the result is the same.

Berners-Lee also weighed in on the growing browser competition in the market. OpenAI released Atlas a few weeks ago. Perplexity has launched Comet. Google has expanded AI features in Chrome. All these browsers run on Chromium, which Berners-Lee acknowledges is not ideal, but conceded that browser engines are expensive to build. He thinks Apple's decision to restrict iPhones to WebKit prevents web apps from competing with native apps.
Virtualization

Linux Ported to WebAssembly, Boots in a Browser Tab (phoronix.com) 54

"During the past two years or so I have been slow-rolling an effort to port the Linux kernel to WebAssembly," reads a surprising post on the Linux kernel mailing list. I'm now at the point where the kernel boots and I can run basic programs from a shell. As you will see if you play around with it for a bit, it's not very stable and will crash sooner or later, but I think this is a good first step. Wasm is not necessarily only targeting the web, but that's how I have been developing this project... This is Linux, booting in your browser tab, accelerated by Wasm.
Phoronix warns that "there are stability issues and it didn't take me long either to trigger crashes for this Linux kernel WASM port when running within Google Chrome."
AI

Do AI Browsers Exist For You - or To Give AI Companies Data? (fastcompany.com) 39

"It's been hard for me to understand why Atlas exists," writes MIT Technology Review. " Who is this browser for, exactly? Who is its customer? And the answer I have come to there is that Atlas is for OpenAI. The real customer, the true end user of Atlas, is not the person browsing websites, it is the company collecting data about what and how that person is browsing."

New York Magazine's "Intelligencer" column argues OpenAI wants ChatGPT in your browser because "That's where people who use computers, particularly for work, spend all their time, and through which vast quantities of valuable information flow in and out. Also, if you're a company hoping to train your models to replicate a bunch of white-collar work, millions of browser sessions would be a pretty valuable source of data."

Unfortunately, warns Fast Company, ChatGPT Atlas, Perplexity Comet, and other AI browses "include some major security, privacy, and usability trade-offs... Most of the time, I don't want to use them and am wary of doing so..." Worst of all, these browsers are security minefields. A web page that looks benign to humans can includehidden instructions for AI agents, tricking them into stealing info from other sites... "If you're signed into sensitive accounts like your bank or your email provider in your browser, simply summarizing a Reddit postcould result in an attacker being able to steal money or your private data,"Brave's security researchers wrotelast week.No one has figured out how to solve this problem.

If you can look past the security nightmares, the actual browsing features are substandard. Neither ChatGPT Atlas nor Perplexity Comet support vertical tabs — a must-have feature for me — and they have no tab search tool or way to look up recently-closed pages. Atlas also doesn't support saving sites as web apps, selecting multiple tabs (for instance, to close all at once with Cmd+W), or customizing the appearance. Compared to all the fancy new AI features, the web browsing part can feel like an afterthought. Regular web search can also be a hassle, even though you'll probably need it sometimes. When I typed "Sichuan Chili" into ChatGPT Atlas, it produced a lengthy description of the Chinese peppers, not the nearby restaurant whose website and number I was looking for.... Meanwhile, the standard AI annoyances still apply in the browser. Getting Perplexity to fill my grocery cart felt like a triumph, but on other occasions the AI has run into inexplicable walls and only ended up wasting more time.

There may be other costs to using these browsers as well. AI still has usage limits, and so all this eventually becomes a ploy to bump more people into paid tiers. Beyond that,Atlas is constantly analyzing the pages you visit to build a "memory" of who you are and what you're into. Do not be surprised if this translates to deeply targeted ads as OpenAI startslooking at ways to monetize free users. For now, I'm only using AI browsers in small doses when I think they can solve a specific problem.

Even then, I'm not going sign them into my email, bank accounts, or any other accounts for which a security breach would be catastrophic. It's too bad, because email and calendars are areas where AI agents could be truly useful, but the security risks are too great (andwell-documented).

The article notes that in August Vivaldi announced that "We're taking a stand, choosing humans over hype" with their browser: We will not use an LLM to add a chatbot, a summarization solution or a suggestion engine to fill up forms for you, until more rigorous ways to do those things are available. Vivaldi is the haven for people who still want to explore. We will continue building a browser for curious minds, power users, researchers, and anyone who values autonomy. If AI contributes to that goal without stealing intellectual property, compromising privacy or the open web, we will use it. If it turns people into passive consumers, we will not...

We're fighting for a better web.

AI

Security Holes Found in OpenAI's ChatGPT Atlas Browser (and Perplexity's Comet) (scworld.com) 20

The address bar/ChatGPT input window in OpenAI's browser ChatGPT Atlas "could be targeted for prompt injection using malicious instructions disguised as links," reports SC World, citing a report from AI/agent security platform NeuralTrust: NeuralTrust found that a malformed URL could be crafted to include a prompt that is treated as plain text by the browser, passing the prompt on to the LLM. A malformation, such as an extra space after the first slash following "https:" prevents the browser from recognizing the link as a website to visit. Rather than triggering a web search, as is common when plain text is submitted to a browser's address bar, ChatGPT Atlas treats plain text as ChatGPT prompts by default.

An unsuspecting user could potentially be tricked into copying and pasting a malformed link, believing they will be sent to a legitimate webpage. An attacker could plant the link behind a "copy link" button so that the user might not notice the suspicious text at the end of the link until after it is pasted and submitted. These prompt injections could potentially be used to instruct ChatGPT to open a new tab to a malicious website such as a phishing site, or to tell ChatGPT to take harmful actions in the user's integrated applications or logged-in sites like Google Drive, NeuralTrust said.

Last month browser security platform LayerX also described how malicious prompts could be hidden in URLs (as a parameter) for Perplexity's browser Comet. And last week SquareX Labs demonstrated that a malicious browser extension could spoof Comet's AI sidebar feature and have since replicated the proof-of-concept (PoC) attack on Atlas.

But another new vulnerability in ChatGPT Atlas "could allow malicious actors to inject nefarious instructions into the artificial intelligence (AI)-powered assistant's memory and run arbitrary code," reports The Hacker News, citing a report from browser security platform LayerX: "This exploit can allow attackers to infect systems with malicious code, grant themselves access privileges, or deploy malware," LayerX Security Co-Founder and CEO, Or Eshed, said in a report shared with The Hacker News. The attack, at its core, leverages a cross-site request forgery (CSRF) flaw that could be exploited to inject malicious instructions into ChatGPT's persistent memory. The corrupted memory can then persist across devices and sessions, permitting an attacker to conduct various actions, including seizing control of a user's account, browser, or connected systems, when a logged-in user attempts to use ChatGPT for legitimate purposes....

"What makes this exploit uniquely dangerous is that it targets the AI's persistent memory, not just the browser session," Michelle Levy, head of security research at LayerX Security, said. "By chaining a standard CSRF to a memory write, an attacker can invisibly plant instructions that survive across devices, sessions, and even different browsers. In our tests, once ChatGPT's memory was tainted, subsequent 'normal' prompts could trigger code fetches, privilege escalations, or data exfiltration without tripping meaningful safeguards...."

LayerX said the problem is exacerbated by ChatGPT Atlas' lack of robust anti-phishing controls, the browser security company said, adding it leaves users up to 90% more exposed than traditional browsers like Google Chrome or Microsoft Edge. In tests against over 100 in-the-wild web vulnerabilities and phishing attacks, Edge managed to stop 53% of them, followed by Google Chrome at 47% and Dia at 46%. In contrast, Perplexity's Comet and ChatGPT Atlas stopped only 7% and 5.8% of malicious web pages.

From The Conversation: Sandboxing is a security approach designed to keep websites isolated and prevent malicious code from accessing data from other tabs. The modern web depends on this separation. But in Atlas, the AI agent isn't malicious code — it's a trusted user with permission to see and act across all sites. This undermines the core principle of browser isolation.
Thanks to Slashdot reader spatwei for suggesting the topic.
Chromium

Unpatched Bug Can Crash Chromium-Based Browsers in Seconds (theregister.com) 24

A critical security flaw in Chromium's Blink rendering engine can crash billions of browsers within seconds. Security researcher Jose Pino discovered the vulnerability and created a proof-of-concept exploit called Brash to demonstrate the bug affecting Chrome, Edge, OpenAI's ChatGPT Atlas, Brave, Vivaldi, Arc, Dia, Opera and Perplexity Comet.

The flaw, reports The Register, exploits the absence of rate limiting on document.title API updates in Chromium versions 143.0.7483.0 and later. The attack injects millions of DOM mutations per second and saturates the main thread. When The Register tested the code on Edge, the browser crashed and the Windows machine locked up after about 30 seconds while consuming 18GB of RAM in one tab. Pino disclosed the bug to the Chromium security team on August 28 and followed up on August 30 but received no response. Google said it is looking into the issue.
Chrome

Google Chrome Will Finally Default To Secure HTTPS Connections Starting in April (engadget.com) 35

An anonymous reader shares a report: The transition to the more-secure HTTPS web protocol has plateaued, according to Google. As of 2020, 95 to 99 percent of navigations in Chrome use HTTPS. To help make it safer for users to click on links, Chrome will enable a setting called Always Use Secure Connections for public sites for all users by default. This will happen in October 2026 with the release of Chrome 154.

The change will happen earlier for those who have switched on Enhanced Safe Browsing protections in Chrome. Google will enable Always Use Secure Connections by default in April when Chrome 147 drops. When this setting is on, Chrome will ask for your permission before it first accesses a public website that doesn't use HTTPS.

AI

Perplexity's AI Browser 'Comet' is Now Free, with Big Marketing Deals to Challenge Chrome (indiatimes.com) 27

"Earlier available only to the paying subscribers, the Comet browser now offers its core features to all users at no cost," writes the Times of India. "This includes AI-powered search, contextual recommendations, and integrated tools designed to streamline research and content discovery." They say the move reflects the Chromium-based browser's goal to "compete with incumbents like Google Chrome and Microsoft Edge" — but also reflects Perplexity's "broader mission to democratize AI tools."
More details from The Verge: The internet is better on Comet," the company says, promising to remain free forever as it styles the browser as a serious challenger to Google's Chrome...

It's supposed to make surfing the web simpler and help you with tasks like shopping, booking trips, and general life admin. To borrow the company's words again: you "get more done." The AI-powered browser launched in July, though was only available for users who subscribed to the $200 per month Perplexity Max plan... No subscription at all will be needed to use Comet going forward, the company says.

Perplexity has even struck deals with major sites including the Washington Post, and the Los Angeles Times to offer free access to their sites for one month through the Comet browser. And last week Perplexity also launched an agressive paid referral program, where active Perplexity Pro/Max subscribers get a payout of up to $15 for each friend who downloads and uses Comet through their affiliate link. (The payout size is based on the friend's country, with $15 being the payout amount for a U.S. user, with $10 payouts for users in 19 other countries include Canada, Australia, the U.K., several EU countries, Japan, and South Korea.

In addition, Srinivas has been sharing positive tweets about Comet. (Like "This is unbelievable. Comet automatically hunts down Sora 2 invite codes across the web and signs you up!") But Perplexity is making even bigger claims for its browser: Perplexity AI CEO Aravind Srinivas said that the Comet AI browser can improve productivity so that companies won't need to hire more people. "Instead of hiring one more person on your team, you could just use Comet to supplement all the work that you're doing," Srinivas told CNBC's "Squawk Box"... The CEO said the artificial intelligence-powered web browser is a "true personal assistant" that allows users to complete more tasks in the same amount of time and said that the productivity gained could be worth $10,000 per year for a single person...

Other tech companies have also been rolling out their own AI browser assistants. In January, OpenAI introduced its web agent, Operator, and Google released Gemini AI to its Chrome browser in September.

Meanwhile, The Verge adds, The Browser Company (makers of the Arc browser) "is going all in on Dia, and Opera just launched its own AI browser, Neon."

Of course, popularity brings problems, writes the Times of India: iPhone users are being warned by Perplexity CEO Aravind Srinivas against downloading a fake 'Comet' app on the App Store. He clarified that the official iOS version is not yet released and the current listing is unauthorized spam..
And earlier this month the browser security platform LayerX described a "CometJacking" attack where malicious prompts could be hidden in URLs (as a parameter). Comet is instructed "to look for data in memory and connected services (e.g., Gmail, Calendar), encode the results (e.g., base64), and POST them to an attacker-controlled endpoint... all while appearing to the user as a harmless 'ask the assistant' flow." (And with some trivial encoding it also seems to evade exfiltration checks.)

The Hacker News reported that Perplexity has classified the findings as "no security impact."

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